Patents by Inventor William J. Schnell

William J. Schnell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190231957
    Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 1, 2019
    Applicant: NxStage Medical, Inc.
    Inventors: Jeffrey H. BURBANK, Dennis M. TREU, Daniel J. RUBERY, JR., Scott W. NEWELL, James M. BRUGGER, William J. SCHNELL, William K. WEIGEL, Steven A. WHITE, Mark T. WYETH, Jerome JAMES, David DESOUZA, Joseph E. TURK, JR., Garrett CASEY
  • Publication number: 20190231956
    Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 1, 2019
    Applicant: NxStage Medical, Inc.
    Inventors: Jeffrey H. BURBANK, Dennis M. TREU, Daniel J. RUBERY, JR., Scott W. NEWELL, James M. BRUGGER, William J. SCHNELL, William K. WEIGEL, Steven A. WHITE, Mark T. WYETH, Jerome JAMES, David DESOUZA, Joseph E. TURK, JR., Garrett CASEY
  • Publication number: 20190231958
    Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 1, 2019
    Applicant: NxStage Medical, Inc.
    Inventors: Jeffrey H. BURBANK, Dennis M. TREU, Daniel J. RUBERY, JR., Scott W. NEWELL, James M. BRUGGER, William J. SCHNELL, William K. WEIGEL, Steven A. WHITE, Mark T. WYETH, Jerome JAMES, David DESOUZA, Joseph E. TURK, JR., Garrett CASEY
  • Patent number: 10344874
    Abstract: Releasable tubing pinch clamps of a generally U-shaped configuration are described. The embodiments include ones that prevent cross-clamping of the tube by various interlocking features on riser portions of the clamp. Methods and molds for making the pinch clamps are also described. For example, a pinch clamp can have a strip that curves so that its ends can be brought together by manually squeezing the strip at its end, which oppose each other as a result of the strip curve. The strip ends have locking edges or surfaces that cause the strip ends to interferingly engage with each other and lock together. The strip also has opposing pinch projections that can pinch a tube.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: July 9, 2019
    Assignee: B. BRAUN MEDICAL INC.
    Inventors: James M. Brugger, William J. Schnell
  • Patent number: 10345175
    Abstract: A pressure measurement pod for blood circuits can include a flexible, moveable, fluid-impermeable diaphragm and can be formed via either a one-shot or a two-shot molding process. A method of manufacturing a pressure measuring device can include providing first and second major mold parts having recesses defining major parts of a housing, and inserting pins in the first and second major mold parts, the pins being shaped to define a flow channel of a molded pressure measuring pod. One of the pins may have a major face that defines an internal surface of a diaphragm. The method may further include closing the first and second major mold parts with the pins therebetween and injection molding a pressure pod housing. Finally, the pressure pod is removed from the mold parts and the pins are withdrawn from the flow channel.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: July 9, 2019
    Assignee: NxStage Medical, Inc.
    Inventors: James M. Brugger, Dennis M. Treu, Jeffrey H. Burbank, Scott W. Newell, William J. Schnell, Kenneth E. Buckler
  • Publication number: 20180318491
    Abstract: A tubular medical fluid flow set comprises a pressure sensing chamber connected in flow-through relation to fluid flow tubing of the set. The pressure sensing chamber defines a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments. The fluid flow tubing communicates with one of the compartments and is isolated from the other of the compartments. A port is carried on the chamber, the port having a seal therein, and communicating with the other of the compartments. Thus, the other of the compartments is hermetically sealed until the port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of the seal.
    Type: Application
    Filed: July 10, 2018
    Publication date: November 8, 2018
    Applicant: NxStage Medical, Inc.
    Inventors: William J. SCHNELL, David BELL, Karen WILSON, David S. UTTERBERG
  • Publication number: 20180256807
    Abstract: According to embodiments, priming systems, methods, and devices are disclosed which allow medical treatment devices which pump fluid to be primed with minimal operator intervention and a high level of convenience. A blood circuit with a filter fitted with one or more air vents on a non-blood compartment is attached to a treatment system and priming fluid pumped slowly through the blood circuit in a loop. The source of fluid may be elevated, or the pumping may generate pressure, such that priming fluid is forced through the membrane of the filter and out the air vent(s). In embodiments, the vents are hydrophobic which prevent fluid from being ejected, so the priming system can run without intervention.
    Type: Application
    Filed: May 11, 2018
    Publication date: September 13, 2018
    Applicant: NxStage Medical, Inc.
    Inventors: James M. BRUGGER, William J. SCHNELL
  • Patent number: 10046102
    Abstract: A tubular medical fluid flow set comprises a pressure sensing chamber connected in flow-through relation to fluid flow tubing of the set. The pressure sensing chamber defines a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments. The fluid flow tubing communicates with one of the compartments and is isolated from the other of the compartments. A port is carried on the chamber, the port having a seal therein, and communicating with the other of the compartments. Thus, the other of the compartments is hermetically sealed until the port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of the seal.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: August 14, 2018
    Assignee: NXSTAGE MEDICAL, INC.
    Inventors: William J. Schnell, David Bell, Karen Wilson, David S. Utterberg
  • Patent number: 10022484
    Abstract: According to embodiments, priming systems, methods, and devices are disclosed which allow medical treatment devices which pump fluid to be primed with minimal operator intervention and a high level of convenience. A blood circuit with a filter fitted with one or more air vents on a non-blood compartment is attached to a treatment system and priming fluid pumped slowly through the blood circuit in a loop. The source of fluid may be elevated, or the pumping may generate pressure, such that priming fluid is forced through the membrane of the filter and out the air vent(s). In embodiments, the vents are hydrophobic which prevent fluid from being ejected, so the priming system can nm without intervention.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: July 17, 2018
    Assignee: NXSTAGE MEDICAL, INC.
    Inventors: James M. Brugger, William J. Schnell
  • Publication number: 20180128698
    Abstract: A pressure measurement pod for blood circuits can include a flexible, moveable, fluid-impermeable diaphragm and can be formed via either a one-shot or a two-shot molding process. A method of manufacturing a pressure measuring device can include providing first and second major mold parts having recesses defining major parts of a housing, and inserting pins in the first and second major mold parts, the pins being shaped to define a flow channel of a molded pressure measuring pod. One of the pins may have a major face that defines an internal surface of a diaphragm. The method may further include closing the first and second major mold parts with the pins therebetween and injection molding a pressure pod housing. Finally, the pressure pod is removed from the mold parts and the pins are withdrawn from the flow channel.
    Type: Application
    Filed: November 1, 2017
    Publication date: May 10, 2018
    Applicant: NxStage Medical, Inc.
    Inventors: James M. BRUGGER, Dennis M. TREU, Jeffrey H. BURBANK, Scott W. NEWELL, William J. SCHNELL, Kenneth E. BUCKLER
  • Patent number: 9835509
    Abstract: A pressure measurement system for use in blood circuits comprised of a pressure sensing pod and a force measurement device. The pressure sensing pod can include a flexible, moveable, fluid-impermeable diaphragm and can be formed via either a one-shot or a two-shot molding process. A mechanical engagement member of the force measurement device engages with a mechanical engagement feature of the diaphragm, and the engagement member is operative to move in concert with movement of the engagement feature of the diaphragm based on pressure variations with the pressure sensing pod. The force measurement device generates and outputs to a processor a signal based on detected force associated with movement of the engagement member.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: December 5, 2017
    Assignee: NXSTAGE MEDICAL, INC.
    Inventors: James M. Brugger, Dennis M. Treu, Jeffrey H. Burbank, Scott W. Newell, William J. Schnell, Kenneth E. Buckler
  • Patent number: 9829113
    Abstract: Releasable tubing pinch clamps of a generally U-shaped configuration are described. The embodiments include ones that prevent cross-clamping of the tube by various interlocking features on riser portions of the clamp. Methods and molds for making the pinch clamps are also described. The pinch clamp consists generally of a strip that curves so that its ends can be brought together by manually squeezing the strip at its ends which oppose each other as a result of the strip curve. The strip ends contain locking edges or surfaces that cause the strip ends to interferingly engage with each other and lock together. The strip also contains opposing pinching projections that pinch a tube.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: November 28, 2017
    Assignee: NXSTAGE MEDICAL, INC.
    Inventors: James M. Brugger, William J. Schnell
  • Publication number: 20170328482
    Abstract: Releasable tubing pinch clamps of a generally U-shaped configuration are described. The embodiments include ones that prevent cross-clamping of the tube by various interlocking features on riser portions of the clamp. Methods and molds for making the pinch clamps are also described. For example, a pinch clamp can have a strip that curves so that its ends can be brought together by manually squeezing the strip at its end, which oppose each other as a result of the strip curve. The strip ends have locking edges or surfaces that cause the strip ends to interferingly engage with each other and lock together. The strip also has opposing pinch projections that can pinch a tube.
    Type: Application
    Filed: July 31, 2017
    Publication date: November 16, 2017
    Applicant: NXSTAGE MEDICAL, INC.
    Inventors: James M. BRUGGER, William J. SCHNELL
  • Publication number: 20170296730
    Abstract: Embodiments include a consumable medical device comprises a rigid cartridge to which a film is adhered to form a fluid channel and a damper chamber. A portion of the film forming the damper chamber has a wave-like shape adapted to roll onto a tip of a damper. The damper has a plunger to minimize peristaltic pressure in the channel The cartridge may include conductivity measurement channels. Crosstalk may be minimized by using different frequencies or time division for reading the channels. A stable dialysate concentrate containing sodium lactate may be used or generated with the system.
    Type: Application
    Filed: October 28, 2016
    Publication date: October 19, 2017
    Applicant: NXSTAGE MEDICAL, INC.
    Inventors: Orlando SOTO, Joseph RAUSA, James M. BRUGGER, William J. SCHNELL, Goetz FRIEDERICHS, Jeffrey H. BURBANK, Joseph E. TURK, Scott W. NEWELL, Amanda WOZNIAK
  • Publication number: 20170296727
    Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.
    Type: Application
    Filed: October 9, 2015
    Publication date: October 19, 2017
    Applicant: NxStage Medical, Inc.
    Inventors: Jeffrey H. BURBANK, Dennis M. TREU, Daniel J. RUBERY, Scott W. NEWELL, James M. BRUGGER, William J. SCHNELL, William K. WEIGEL, Steve WHITE, Mark T. WYETH, Jerome JAMES, David DESOUZA, Joseph E. TURK, Garrett CASEY
  • Publication number: 20170028119
    Abstract: A pressure measurement system for use in blood circuits comprised of a pressure sensing pod and a force measurement device. The pressure sensing pod can include a flexible, moveable, fluid-impermeable diaphragm and can be formed via either a one-shot or a two-shot molding process. A mechanical engagement member of the force measurement device engages with a mechanical engagement feature of the diaphragm, and the engagement member is operative to move in concert with movement of the engagement feature of the diaphragm based on pressure variations with the pressure sensing pod. The force measurement device generates and outputs to a processor a signal based on detected force associated with movement of the engagement member.
    Type: Application
    Filed: July 26, 2016
    Publication date: February 2, 2017
    Applicant: NxStage Medical, Inc.
    Inventors: James M. Brugger, Dennis M. Treu, Jeffrey H. Burbank, Scott W. Newell, William J. Schnell, Kenneth E. Buckler
  • Patent number: 9551625
    Abstract: A pressure measurement system for use in blood circuits comprised of a pressure sensing pod and a force measurement device. The pressure sensing pod can include a flexible, moveable, fluid-impermeable diaphragm and can be formed via either a one-shot or a two-shot molding process. A mechanical engagement member of the force measurement device engages with a mechanical engagement feature of the diaphragm, and the engagement member is operative to move in concert with movement of the engagement feature of the diaphragm based on pressure variations with the pressure sensing pod. The force measurement device generates and outputs to a processor a signal based on detected force associated with movement of the engagement member.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: January 24, 2017
    Assignee: NXSTAGE MEDICAL, INC.
    Inventors: James M. Brugger, Dennis M. Treu, Jeffrey H. Burbank, Scott W. Newell, William J. Schnell, Kenneth E. Buckler
  • Publication number: 20160303306
    Abstract: A tubular medical fluid flow set comprises a pressure sensing chamber connected in flow-through relation to fluid flow tubing of the set. The pressure sensing chamber defines a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments. The fluid flow tubing communicates with one of the compartments and is isolated from the other of the compartments. A port is carried on the chamber, the port having a seal therein, and communicating with the other of the compartments. Thus, the other of the compartments is hermetically sealed until the port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of the seal.
    Type: Application
    Filed: June 28, 2016
    Publication date: October 20, 2016
    Applicant: NxStage Medical, Inc.
    Inventors: William J. SCHNELL, David BELL, Karen WILSON, David S. UTTERBERG
  • Patent number: 9393397
    Abstract: A tubular medical fluid flow set comprises a pressure sensing chamber connected in flow-through relation to fluid flow tubing of the set. The pressure sensing chamber defines a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments. The fluid flow tubing communicates with one of the compartments and is isolated from the other of the compartments. A port is carried on the chamber, the port having a seal therein, and communicating with the other of the compartments. Thus, the other of the compartments is hermetically sealed until the port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of the seal.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: July 19, 2016
    Assignee: NXSTAGE MEDICAL, INC.
    Inventors: William J. Schnell, David Bell, Karen Wilson, David S. Utterberg
  • Publication number: 20150367062
    Abstract: According to embodiments, priming systems, methods, and devices are disclosed which allow medical treatment devices which pump fluid to be primed with minimal operator intervention and a high level of convenience. A blood circuit with a filter fitted with one or more air vents on a non-blood compartment is attached to a treatment system and priming fluid pumped slowly through the blood circuit in a loop. The source of fluid may be elevated, or the pumping may generate pressure, such that priming fluid is forced through the membrane of the filter and out the air vent(s). In embodiments, the vents are hydrophobic which prevent fluid from being ejected, so the priming system can nm without intervention.
    Type: Application
    Filed: February 6, 2014
    Publication date: December 24, 2015
    Inventors: James M. BRUGGER, William J. SCHNELL